Organic Solid-State Chemistry—2


Book Description

Organic Solid-State Chemistry–2 presents the solid state reactions in molecular crystals. This book discusses the correlations of the chemical structures of products from organic solid state reactions with the molecular packing in the reactant crystal structures. Organized into 10 chapters, this book begins with an overview of the molecular behavior after the chemical transition state. This text then examines the electron paramagnetic resonance methods, which offer many features in connection with the study of chemical reactions in which a paramagnetic species is a product or a reactant. Other chapters consider the interpretation of radiationless transitions, thermal reactions, and photochemical decompositions and rearrangements. The final chapter deals with the experimental results concerning electron and hole production in anthracene crystals, with emphasis on the relevance of these studies to the fundamental question of the nature of the excess electron states in these low mobility crystals. This book is a valuable resource for solid state chemists, photochemists, spectroscopists, scientists, and research workers.




Treatise on Solid State Chemistry


Book Description

The last quarter-century has been marked by the extremely rapid growth of the solid-state sciences. They include what is now the largest subfield of physics, and the materials engineering sciences have likewise flourished. And, playing an active role throughout this vast area of science and engineer ing have been very large numbers of chemists. Yet, even though the role of chemistry in the solid-state sciences has been a vital one and the solid-state sciences have, in turn, made enormous contributions to chemical thought, solid-state chemistry has not been recognized by the general body of chemists as a major subfield of chemistry. Solid-state chemistry is not even well defined as to content. Some, for example, would have it include only the quantum chemistry of solids and would reject thermodynamics and phase equilibria; this is nonsense. Solid-state chemistry has many facets, and one of the purposes of this Treatise is to help define the field. Perhaps the most general characteristic of solid-state chemistry, and one which helps differentiate it from solid-state physics, is its focus on the chemical composition and atomic configuration of real solids and on the relationship of composition and structure to the chemical and physical properties of the solid. Real solids are usually extremely complex and exhibit almost infinite variety in their compositional and structural features.







Organic Crystals Germanates Semiconductors


Book Description

1.1 Preface Organic chemistry had its origin in chemicals which are synthesized by living cells. These chemicals consist of molecules whose skeletons are built up of carbon atoms. The remaining valences are connected with ligands such as hydrogen, halo gens, -OH,==O, -NH . Some of the skeletal carbon atoms can be replaced by non 2 metals such as oxygen, nitrogen, or sulfur {"heteroatoms"}. It is characteristic for the living world, not to be in a crystalline state. However it is possible to obtain single crystals from many organic compounds both of natural and synthetic origin. For a number of years the physics and chem istry of these crystals have stimulated fundamental research on a rapidly growing scale. The great variety of possible organic structures {as compared to inorganics} opens up a large field of new materials and of novel material properties; for previous literature reviews and data compilations see 1-40) and Chap. 6. The art of producing good and pure organic single crystals has developed hand in-hand with the ever growing requirements of basic research, arising from its interest in fundamental interactions in the solid state. Interactions manifest themselves in a very detailed way by energy transfer.




Organic Solid-State Lasers


Book Description

Organic lasers are broadly tunable coherent sources, potentially compact, convenient and manufactured at low-costs. Appeared in the mid 60’s as solid-state alternatives for liquid dye lasers, they recently gained a new dimension after the demonstration of organic semiconductor lasers in the 90's. More recently, new perspectives appeared at the nanoscale, with organic polariton and surface plasmon lasers. After a brief reminder to laser physics, a first chapter exposes what makes organic solid-state organic lasers specific. The laser architectures used in organic lasers are then reviewed, with a state-of-the-art review of the performances of devices with regard to output power, threshold, lifetime, beam quality etc. A survey of the recent trends in the field is given, highlighting the latest developments with a special focus on the challenges remaining for achieving direct electrical pumping of organic semiconductor lasers. A last chapter covers the applications of organic solid-state lasers.




Advances in Polymer Science and Engineering


Book Description

The Proceedings and the Symposium on Polymer Science and Engineering, to be held on October 26 and 27, 1972 at Rutgers University, are in honor of Professor John A. Sauer. October 26, 1972 marks the 60th birthday of Professor Sauer and we feel it is quite appropriate to make note of this event. All of the contrib uting authors have eagerly submitted their original works as an expression of their esteem and affection for this dedicated man, friend, husband, father, scientist and teacher. This book could have been made extremely voluminous and the Symposium could have gone on for days. However, the achievements of a man such as Jack Sauer do not have to be measured by the number of pages in a book nor the number of speakers at a meeting. A more meaningful measure is the sincerity and devotion with which these few pages were assembled. All of the contributions to these Proceedings are from invited speakers. Numbered among the contrib utors are some of Jack's ~ personal friends as well as numerous former students who are currently working in the field of polymer science and engineering. It will be apparent to all who know him that those included represent but a small portion of Jack's friends and students. Although a fairly exhaustive search was made before the invitations were sent the number of omissions is both extremely large and unavoidable.




Polymer Biomaterials in Solution, as Interfaces and as Solids


Book Description

The articles collected in this publication have previously been published in eight special issues of the Journal of Biomaterials Science, Polymer Edition, in honour of Dr. Allan S. Hoffman, who is known as a pioneer, a leader and a mentor in the field of biomaterials. The papers from renowned scientists from all parts of the world, representing the




Bioenergetics


Book Description

Comprehensive Biochemisty, Volume 22: Bioenergetics focuses on comprehensive biochemistry that provides a chemical approach to the understanding of the phenomena of life. This book is devoted to certain aspects of organic and physical chemistry, aspects considered pertinent to the interpretation of biochemical techniques, and chemistry of biological compounds and mechanisms. The topics discussed include the methods and scope of quantum biochemistry, long range dipole-dipole transfer, and characteristics of the charge-transfer absorption band. The dye-sensitized photoconductivity, facilitation of solute diffusion by catalytic carriers, and coupling of primary and secondary translocation are also covered in this publication. This volume is valuable to biochemists and researchers concerned with biogenetics.